Hausmannite

Hausmannite

Hausmannite is a complex oxide of manganese containing both di- and tri-valent manganese. The formula can be represented as Mn2+Mn3+2O4. It belongs to the spinel group and forms tetragonal crystals. Hausmannite is a brown to black metallic mineral with Mohs hardness of 5.5 and a specific gravity of 4.8.The type locality is Oehrenstock (Öhrenstock), Ilmenau, Thuringian Forest, Thuringia, Germany. Locations include Batesville, Arkansas, USA; Ilfeld, Germany; Langban, Sweden; and the Ural Mountains, Russia. The best samples have been found in South Africa and Namibia where it is associated with other manganese oxides, pyrolusite and psilomelane and the iron-manganese mineral bixbyite.

External links

* [http://mineral.galleries.com/minerals/oxides/hausmann/hausmann.htm Mineral galleries]
* [http://www.mindat.org/min-1832.html Mindat]
* [http://webmineral.com/data/Hausmannite.shtml Webmineral]


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Look at other dictionaries:

  • hausmannite — ● hausmannite nom féminin (de Hausmann, nom propre) Oxyde naturel de manganèse, de formule Mn3O4 …   Encyclopédie Universelle

  • Hausmannite — Pour les articles homonymes, voir Hausmann. Hausmannite Général …   Wikipédia en Français

  • hausmannite — hausmanitas statusas T sritis chemija apibrėžtis Mineralas. formulė Mn₃O₄ atitikmenys: angl. hausmannite rus. гаусманнит …   Chemijos terminų aiškinamasis žodynas

  • hausmannite — ▪ mineral       a manganese oxide mineral (Mn2+Mn3+2O4) that occurs as brownish black crystals or granular masses in high temperature hydrothermal veins and in contact metamorphic zones. It is found associated with other oxide minerals of… …   Universalium

  • hausmannite — noun A dark mineral composed of manganese tetroxide, sometimes used as an ore of manganese …   Wiktionary

  • hausmannite — haus·mann·ite …   English syllables

  • hausmannite — noun a mineral consisting of manganese tetroxide; a source of manganese • Hypernyms: ↑mineral • Substance Meronyms: ↑manganese, ↑Mn, ↑atomic number 25, ↑manganese tetroxide …   Useful english dictionary

  • 1317-35-7 — Hausmannite Hausmannite Général Nom IUPAC tétroxyde de trimanganèse No CAS …   Wikipédia en Français

  • Mn3O4 — Hausmannite Hausmannite Général Nom IUPAC tétroxyde de trimanganèse No CAS …   Wikipédia en Français

  • SPINELLES — Le groupe des spinelles est composé d’oxydes doubles répondant à la formule générale MO 練M 23 ou MM 24. Le métal bivalent M peut être Mg, Fe, Zn, Mn, Co, Ni, et le métal trivalent M Al, Fe, Cr, V, Ga, In. Par ailleurs, des métaux quadrivalents… …   Encyclopédie Universelle

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